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Ok so I removed R34, and the relay was not clicking when I turned it on.
what I probably didn’t notice after the last incident was that there was no light in the display anymore.
I could meassure 5V supply to the display board.
And then I looked away for 2 seconds and fireworks started in the back of the amplifier.
From what I can see two of the big grey resistors has burn marks
Unless anyone thinks this is fixable I think I will let this BM5500 rest in peace.
One side note. It is a prototype unit with Red labels that my father got when he worked at B&O. I have noticed that there are things that doesn’t line up with what the diagrams show. For example there is a transistor callled TR5 on the display board with connections to two LED’s. This is not shown in the digram
On question thought: did you manage to get the BL3500, working as it should with the WL1? That mean having it wirelessly connected to a master link master and having the WL1 starting the 3500?
I you refer to what is shown in the Bl3500 user manual I haven’t tried that setup as I gues it will work and is a little outside the scope of this thread.
But to clarify the setup I tried I have modified the sketch from the user manual:
The Powerlink cable has to be fully wire for it to function as it needs both the normal powerlink on signal on pin 4, and the data signal that is on pin 6.
This setup works, but I can’t replicate it with powerlink outputs from BL active, MCL2AV or BS Ouverture, so the data signal from the W1 must be the key for this to work.
One odd thing I noticed when measuring voltages was that pin 1 on the BL W1 Powerlink connector was 12V which seems high, but the BL3500 MKII doesn’t seem to have anything connected to pin 1 so might not mean anything in relation to the BL3500
Just to be sure that PIN 1 in the powerlink connector is not used for turning the BL3500 MKII on I decided to disassemble the BL3500 so I could get full access to the plug PCB. I found out that most of the parts have to removed from the aluminum enclosure in one piece
From there I could unscrew the plug PCB.
There is no sign of connections from pin 1 of the DIN connector on the PCB. To verify further I also tried to do continuity test from pin 1 to all other connections, test points and vias on the PCB, and found no place with connction. So I’m about 99.9% sure that Pin 1 has nothing to do with activating the BL3500 MKII via Powerlink.
I have now got three Beolink Wireless 1 for a price that was reasonable enough for testing purposes to continue this thread.
I have no idea what software level they are on but according to this thread https://archivedforum.beoworld.org/forums/p/37237/346020.aspx#346020 the serial numbers would indicate that the software level is at least 2.1.
Tried to set it up and test it with the BL3500 MKII SW 3.1 with powerlink connection.
I have setup the BL3500 MKII to no ML and in option 0 (no IR).
Connection is as follows:
BLC1611 (as audio master) – ML – BL W1 transmitter- wireless – BL W1 Reciever – powerlink – BL3500 MK2
The W1 reciever has an IR eye attached.
And it just works. when I choose a source the BL3500 turn on and I can regulate the volume. The source is not shown in the display though.
For good measure I tried to cover the IR reciver on the BL3500, and I can still control it, so it is actually being controlled from the BL W1 through powerlink.
Next I will dive a little futher into this trying to investegate what the W1 does that other powerlink output doesn’t
